diff options
Diffstat (limited to 'drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c')
-rw-r--r-- | drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c new file mode 100644 index 000000000000..b5cdbbfcc388 --- /dev/null +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c @@ -0,0 +1,215 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2023 MediaTek Inc. + * Author: Yunfei Dong <yunfei.dong@mediatek.com> + */ + +#include <linux/debugfs.h> + +#include "mtk_vcodec_dbgfs.h" +#include "mtk_vcodec_drv.h" +#include "mtk_vcodec_util.h" + +static void mtk_vdec_dbgfs_get_format_type(struct mtk_vcodec_ctx *ctx, char *buf, + int *used, int total) +{ + int curr_len; + + switch (ctx->current_codec) { + case V4L2_PIX_FMT_H264_SLICE: + curr_len = snprintf(buf + *used, total - *used, + "\toutput format: h264 slice\n"); + break; + case V4L2_PIX_FMT_VP8_FRAME: + curr_len = snprintf(buf + *used, total - *used, + "\toutput format: vp8 slice\n"); + break; + case V4L2_PIX_FMT_VP9_FRAME: + curr_len = snprintf(buf + *used, total - *used, + "\toutput format: vp9 slice\n"); + break; + default: + curr_len = snprintf(buf + *used, total - *used, + "\tunsupported output format: 0x%x\n", + ctx->current_codec); + } + *used += curr_len; + + switch (ctx->capture_fourcc) { + case V4L2_PIX_FMT_MM21: + curr_len = snprintf(buf + *used, total - *used, + "\tcapture format: MM21\n"); + break; + case V4L2_PIX_FMT_MT21C: + curr_len = snprintf(buf + *used, total - *used, + "\tcapture format: MT21C\n"); + break; + default: + curr_len = snprintf(buf + *used, total - *used, + "\tunsupported capture format: 0x%x\n", + ctx->capture_fourcc); + } + *used += curr_len; +} + +static void mtk_vdec_dbgfs_get_help(char *buf, int *used, int total) +{ + int curr_len; + + curr_len = snprintf(buf + *used, total - *used, + "help: (1: echo -'info' > vdec 2: cat vdec)\n"); + *used += curr_len; + + curr_len = snprintf(buf + *used, total - *used, + "\t-picinfo: get resolution\n"); + *used += curr_len; + + curr_len = snprintf(buf + *used, total - *used, + "\t-format: get output & capture queue format\n"); + *used += curr_len; +} + +static ssize_t mtk_vdec_dbgfs_write(struct file *filp, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct mtk_vcodec_dev *vcodec_dev = filp->private_data; + struct mtk_vcodec_dbgfs *dbgfs = &vcodec_dev->dbgfs; + + mutex_lock(&dbgfs->dbgfs_lock); + dbgfs->buf_size = simple_write_to_buffer(dbgfs->dbgfs_buf, sizeof(dbgfs->dbgfs_buf), + ppos, ubuf, count); + mutex_unlock(&dbgfs->dbgfs_lock); + if (dbgfs->buf_size > 0) + return count; + + return dbgfs->buf_size; +} + +static ssize_t mtk_vdec_dbgfs_read(struct file *filp, char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct mtk_vcodec_dev *vcodec_dev = filp->private_data; + struct mtk_vcodec_dbgfs *dbgfs = &vcodec_dev->dbgfs; + struct mtk_vcodec_dbgfs_inst *dbgfs_inst; + struct mtk_vcodec_ctx *ctx; + int total_len = 200 * (dbgfs->inst_count == 0 ? 1 : dbgfs->inst_count); + int used_len = 0, curr_len, ret; + bool dbgfs_index[MTK_VDEC_DBGFS_MAX] = {0}; + char *buf = kmalloc(total_len, GFP_KERNEL); + + if (!buf) + return -ENOMEM; + + if (strstr(dbgfs->dbgfs_buf, "-help") || dbgfs->buf_size == 1) { + mtk_vdec_dbgfs_get_help(buf, &used_len, total_len); + goto read_buffer; + } + + if (strstr(dbgfs->dbgfs_buf, "-picinfo")) + dbgfs_index[MTK_VDEC_DBGFS_PICINFO] = true; + + if (strstr(dbgfs->dbgfs_buf, "-format")) + dbgfs_index[MTK_VDEC_DBGFS_FORMAT] = true; + + mutex_lock(&dbgfs->dbgfs_lock); + list_for_each_entry(dbgfs_inst, &dbgfs->dbgfs_head, node) { + ctx = dbgfs_inst->vcodec_ctx; + + curr_len = snprintf(buf + used_len, total_len - used_len, + "inst[%d]:\n ", ctx->id); + used_len += curr_len; + + if (dbgfs_index[MTK_VDEC_DBGFS_PICINFO]) { + curr_len = snprintf(buf + used_len, total_len - used_len, + "\treal(%dx%d)=>align(%dx%d)\n", + ctx->picinfo.pic_w, ctx->picinfo.pic_h, + ctx->picinfo.buf_w, ctx->picinfo.buf_h); + used_len += curr_len; + } + + if (dbgfs_index[MTK_VDEC_DBGFS_FORMAT]) + mtk_vdec_dbgfs_get_format_type(ctx, buf, &used_len, total_len); + } + mutex_unlock(&dbgfs->dbgfs_lock); +read_buffer: + ret = simple_read_from_buffer(ubuf, count, ppos, buf, used_len); + kfree(buf); + return ret; +} + +static const struct file_operations vdec_fops = { + .open = simple_open, + .write = mtk_vdec_dbgfs_write, + .read = mtk_vdec_dbgfs_read, +}; + +void mtk_vcodec_dbgfs_create(struct mtk_vcodec_ctx *ctx) +{ + struct mtk_vcodec_dbgfs_inst *dbgfs_inst; + struct mtk_vcodec_dev *vcodec_dev = ctx->dev; + + dbgfs_inst = kzalloc(sizeof(*dbgfs_inst), GFP_KERNEL); + if (!dbgfs_inst) + return; + + list_add_tail(&dbgfs_inst->node, &vcodec_dev->dbgfs.dbgfs_head); + + vcodec_dev->dbgfs.inst_count++; + + dbgfs_inst->inst_id = ctx->id; + dbgfs_inst->vcodec_ctx = ctx; +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_create); + +void mtk_vcodec_dbgfs_remove(struct mtk_vcodec_dev *vcodec_dev, int ctx_id) +{ + struct mtk_vcodec_dbgfs_inst *dbgfs_inst; + + list_for_each_entry(dbgfs_inst, &vcodec_dev->dbgfs.dbgfs_head, node) { + if (dbgfs_inst->inst_id == ctx_id) { + vcodec_dev->dbgfs.inst_count--; + break; + } + } + + if (dbgfs_inst) { + list_del(&dbgfs_inst->node); + kfree(dbgfs_inst); + } +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_remove); + +void mtk_vcodec_dbgfs_init(struct mtk_vcodec_dev *vcodec_dev, bool is_encode) +{ + struct dentry *vcodec_root; + + if (is_encode) + vcodec_dev->dbgfs.vcodec_root = debugfs_create_dir("vcodec-enc", NULL); + else + vcodec_dev->dbgfs.vcodec_root = debugfs_create_dir("vcodec-dec", NULL); + if (IS_ERR(vcodec_dev->dbgfs.vcodec_root)) + dev_err(&vcodec_dev->plat_dev->dev, "create vcodec dir err:%d\n", + IS_ERR(vcodec_dev->dbgfs.vcodec_root)); + + vcodec_root = vcodec_dev->dbgfs.vcodec_root; + debugfs_create_x32("mtk_v4l2_dbg_level", 0644, vcodec_root, &mtk_v4l2_dbg_level); + debugfs_create_x32("mtk_vcodec_dbg", 0644, vcodec_root, &mtk_vcodec_dbg); + + vcodec_dev->dbgfs.inst_count = 0; + if (is_encode) + return; + + INIT_LIST_HEAD(&vcodec_dev->dbgfs.dbgfs_head); + debugfs_create_file("vdec", 0200, vcodec_root, vcodec_dev, &vdec_fops); + mutex_init(&vcodec_dev->dbgfs.dbgfs_lock); +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_init); + +void mtk_vcodec_dbgfs_deinit(struct mtk_vcodec_dev *vcodec_dev) +{ + debugfs_remove_recursive(vcodec_dev->dbgfs.vcodec_root); +} +EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_deinit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Mediatek video codec driver"); |